Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9eb169a703a79de…

MALICIOUS

PDF

39.9 KB Created: 2020-08-04 23:38:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 10225507b6d417a24cf708f5d7de8707 SHA-1: 0ba01994b7032a8132d224bce2687fb163a28f82 SHA-256: a9eb169a703a79de3926939f1c408f3d2f8d09ce69aa5244258124fc070a5c3a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The document body contains the URL 'https://ttraff.com/pify?keyword=ac+dc+electrical+catalogue+pdf', which is a known malicious redirector. The presence of numerous other links, many hosted on Shopify, suggests an attempt to distribute malicious content or conduct phishing by obscuring the true destination through redirectors.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=ac+dc+electrical+catalogue+pdf
    • http://files.chocolatefountainprice.com/uploads/1/3/0/7/130775221/41f47a8566d7.pdf
    • http://files.mchfcoonhound.com/uploads/1/3/1/4/131437666/lewesimuloravo.pdf
    • http://files.millbrookrotarydirectory.com/uploads/1/3/0/7/130775846/d99ea.pdf
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/financial_risk_management_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/26277563582.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/98808863603.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/fomevek.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/call_flooder_app.pdf
    • https://cdn.shopify.com/s/files/1/0440/5939/4213/files/xetaxowupaxesanit.pdf
    • https://cdn.shopify.com/s/files/1/0433/6222/2232/files/mamigopopixijurigoraxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/wii_u_usb_helper_cemu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7683/7785/files/92988459425.pdf
    • https://cdn.shopify.com/s/files/1/0436/9353/9478/files/lobumodutamilifisabuzux.pdf
    • https://cdn.shopify.com/s/files/1/0432/3685/1874/files/31296794247.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74535711799.pdf
    • https://cdn.shopify.com/s/files/1/0432/3606/5438/files/capgemini_category_management.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f36.bin
a032fb598d0ccb78adc2bb6079fd211364ecadb3efc2b9b3cbb9d15131426c84
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F36 5136 bytes
font_01_sfnt_off000070bf.bin
f00b99edce6dbf3b819ba481b6ebedd16fae299233c11c334bff840da388be76
pdf-font-stream PDF embedded font (sfnt) at offset 0x70BF 9920 bytes